-
3000 BCE
Obelisks
Used by Egyptians to tell time, the sun would cast a shadow -
520 BCE
Time Candles
Time candles were used in China and time was based on how much of the wick had burned -
500 BCE
Water clocks
Greeks and Egyptians both used the water clock to determine the passage of time -
300 BCE
Sundials
Babylonians used the sundial and a 12 hour clock to tell time during the day -
1100
Hourglass
Europeans used this glass figure eight shaped container half filled with sand to determine the passage of time. -
Period: 1300 to
Mechanical to Analog Clocks
Mechanical clocks used weights and balances, eventually pendulums were added and the accuracy also improved over the years. -
International Date Line
The prime meridian was determined to be located in England and all time moves back from that point using the 24 hour clock. -
Greenwich Mean Time
Time zones were created in order to record times in a more scientific manner. -
Daylight Savings Time
Used in Canada, the United States and France to give more daylight hours for work during the fall season. -
Digital Clocks
Uses quartz crystal and batteries and keeps very accurate time, also used in watches -
Universal Time Coordinate
Most accurate system of time telling and used for the entire planet, starting in the U.S. in the GMT zone.